EP0939744B1 - Vorrichtung zur härtung gebogenen glasscheiben - Google Patents

Vorrichtung zur härtung gebogenen glasscheiben Download PDF

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Publication number
EP0939744B1
EP0939744B1 EP98943954A EP98943954A EP0939744B1 EP 0939744 B1 EP0939744 B1 EP 0939744B1 EP 98943954 A EP98943954 A EP 98943954A EP 98943954 A EP98943954 A EP 98943954A EP 0939744 B1 EP0939744 B1 EP 0939744B1
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EP
European Patent Office
Prior art keywords
rollers
glass sheets
glass
less
glass sheet
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Expired - Lifetime
Application number
EP98943954A
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English (en)
French (fr)
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EP0939744A1 (de
Inventor
Jean-Pierre Douche
Jean-Marc Petitcollin
Gilles Garnier
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Saint Gobain Glass France SAS
Original Assignee
Saint Gobain Glass France SAS
Compagnie de Saint Gobain SA
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Publication of EP0939744A1 publication Critical patent/EP0939744A1/de
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Classifications

    • C—CHEMISTRY; METALLURGY
    • C03—GLASS; MINERAL OR SLAG WOOL
    • C03B—MANUFACTURE, SHAPING, OR SUPPLEMENTARY PROCESSES
    • C03B27/00—Tempering or quenching glass products
    • C03B27/04—Tempering or quenching glass products using gas
    • C03B27/0404—Nozzles, blow heads, blowing units or their arrangements, specially adapted for flat or bent glass sheets
    • C—CHEMISTRY; METALLURGY
    • C03—GLASS; MINERAL OR SLAG WOOL
    • C03B—MANUFACTURE, SHAPING, OR SUPPLEMENTARY PROCESSES
    • C03B27/00—Tempering or quenching glass products
    • C03B27/04—Tempering or quenching glass products using gas
    • C03B27/044—Tempering or quenching glass products using gas for flat or bent glass sheets being in a horizontal position
    • C—CHEMISTRY; METALLURGY
    • C03—GLASS; MINERAL OR SLAG WOOL
    • C03B—MANUFACTURE, SHAPING, OR SUPPLEMENTARY PROCESSES
    • C03B27/00—Tempering or quenching glass products
    • C03B27/04—Tempering or quenching glass products using gas
    • C03B27/0413—Stresses, e.g. patterns, values or formulae for flat or bent glass sheets
    • C—CHEMISTRY; METALLURGY
    • C03—GLASS; MINERAL OR SLAG WOOL
    • C03B—MANUFACTURE, SHAPING, OR SUPPLEMENTARY PROCESSES
    • C03B27/00—Tempering or quenching glass products
    • C03B27/04—Tempering or quenching glass products using gas
    • C03B27/0422—Tempering or quenching glass products using gas for flat or bent glass sheets starting in an horizontal position and ending in a non-horizontal position
    • C03B27/0426—Tempering or quenching glass products using gas for flat or bent glass sheets starting in an horizontal position and ending in a non-horizontal position for bent glass sheets
    • C03B27/0431—Tempering or quenching glass products using gas for flat or bent glass sheets starting in an horizontal position and ending in a non-horizontal position for bent glass sheets the quench unit being adapted to the bend of the sheet
    • C—CHEMISTRY; METALLURGY
    • C03—GLASS; MINERAL OR SLAG WOOL
    • C03B—MANUFACTURE, SHAPING, OR SUPPLEMENTARY PROCESSES
    • C03B27/00—Tempering or quenching glass products
    • C03B27/04—Tempering or quenching glass products using gas
    • C03B27/052—Tempering or quenching glass products using gas for flat or bent glass sheets being in a vertical position
    • C03B27/0528—Controlling or regulating
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02P—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION OR PROCESSING OF GOODS
    • Y02P40/00—Technologies relating to the processing of minerals
    • Y02P40/50—Glass production, e.g. reusing waste heat during processing or shaping
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02P—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION OR PROCESSING OF GOODS
    • Y02P40/00—Technologies relating to the processing of minerals
    • Y02P40/50—Glass production, e.g. reusing waste heat during processing or shaping
    • Y02P40/57—Improving the yield, e-g- reduction of reject rates

Definitions

  • the invention relates to a device for bending and cooling glass sheets. More specifically, the invention relates to a device for bending and cooling the glass sheets to the parade, that is to say in which the glass sheets advance during their bending and cooling.
  • the invention is described with reference to techniques for bending and quenching glass sheets by scrolling on a roller conveyor having a curved profile in the direction of travel of the glass sheets.
  • the aforementioned techniques are known in particular French patents FR-B-2 242 219 and FR-B-2 549 465 and consist in scrolling glass sheets, heated in a horizontal oven, between two sheets of rollers - or other rotating elements - arranged in a curvilinear profile, and passing through an end quench zone.
  • the plies are constituted for example by straight cylindrical rods arranged in a circular profile.
  • the plies may also be made of elements conferring a secondary curvature to the glazings, such as conical elements or else of the diabolo-barrel type.
  • This technique allows a very high production capacity because on the one hand, the glass sheets do not have to be widely spaced, a sheet of glass can easily enter the forming zone while the treatment of the previous sheet n is not completed and secondly, if the length of the rollers allows it, two or three sheets of glass can be treated simultaneously front.
  • the speed of travel of the sheets or sheets of glass is at least 10 cm / s and of the order of 15 to 25 cm / s.
  • the speed usually does not exceed 30 cm / s to allow sufficient time of quenching.
  • no fragments shall be more than 3.5 cm 2 , except possibly in a band 2 cm wide at the periphery of the glazing and within a radius of 7.5 cm around the point of impact and none Elongated fragment of more than 7.5 cm must not exist.
  • the heat exchange coefficient When the thickness of the glass sheets decreases, and to meet the same quenching standards, the heat exchange coefficient must be greatly increased.
  • the improvement of the heat exchange coefficient is obtained by an increase of the air flow which leads to a higher speed. important air in the glass sheets.
  • Such an embodiment has the disadvantage of first requiring boosters or more powerful new facilities to produce the required air flow rates that are very expensive. Furthermore, this leads to local overpressures and confinement of the air which evacuates only very difficult, especially on the upper face in the case of scrolling on a conveyor concavity facing upwards. Such confinement then leads to a decrease in the heat exchange coefficient.
  • Another solution is to reduce the diameter of the nozzles to increase the speed of the air at a constant rate.
  • the reduction of the diameter of the nozzles requires a reconciliation of the orifices with respect to the glass sheets to maintain the required speeds at the surface. said glass sheets.
  • WO 91/11398 teaches the use of perforated pipe placed between lower rollers conveying flat panes to cool them by blowing air.
  • EP-A2-884286 not published at the filing date of the present application, teaches a tempered glazing of thickness between 2.3 and 3.5 mm having an average surface compression stress of 1000-1300 kg / cm 2 .
  • the object of the invention is thus a new device for bending and cooling glass sheets which is more flexible from the point of view of use than current techniques and makes it possible to increase the heat exchange coefficient by obviating the disadvantages mentioned above and more particularly without requiring fundamentally different and expensive facilities.
  • a device for bending and quenching cooling or thermal curing glass sheets traveling on a roller conveyor comprising two roll sheets arranged in a curvilinear profile, between which the glass excavations are conveyed to be curved and then cooled, said rollers acting on both sides of said sheets, said device comprising, for cooling, blow boxes cooling the two faces of said sheets, characterized in that boxes inserted between rollers have a surface facing each other; of the glass sheet at a distance thereof less than 30 mm and preferably less than 10 mm, said surface being pierced with several holes for discharging the air towards the glass sheet.
  • rollers any type of element of revolution which by its shape and / or its disposition can confer a curvature on the glass sheets. They are, for example, cylinders, barrel-type devices, conical systems, counter-deflected systems, such as those described in patents EP-B-0 263 030 and EP-B-0 474 531.
  • Such a device according to the invention actually allows an increase in the heat exchange coefficient by maintaining the basic cooling installations and without the need for boosters, especially in order to obtain higher blown air flow rates.
  • the blown air flow rates are not increased compared to the usual conditions of use, the risks of local overpressure and therefore of air containment are avoided.
  • the production of caissons comprising a plate pierced with holes considerably limits the pressure losses, especially with respect to the flow of air in the tube constituting a blowing nozzle.
  • the boxes are positioned above and below the trajectory of the glass sheets.
  • the diameters of the holes are between 2 and 8 mm and advantageously less than 5 mm; they are distributed in a pitch of less than 20 mm and preferably between 3 and 6 mm.
  • This preferred embodiment not only makes it possible to increase the heat exchange coefficient with respect to the usual cooling techniques, in particular for a given air flow, but also it makes it possible to obtain a more homogeneous distribution of the cooling on the surface of the air. a sheet of glass. Indeed, compared to conventional cooling facilities, the blowing ports are closer to each other and lead to greater blowing homogeneity on the surface of a glass sheet.
  • the usual cooling installations consist of nozzles distributed with a pitch generally greater than 30 mm, which leads to a cooling of the surface of the glass acceptable from the point of view result, but significantly less homogeneous than the device proposed by the invention.
  • the device associated with a blowing pressure of less than 3000 mm of water column, allows a heat exchange coefficient with the glass of at least 800 W / m 2 . and preferably at least 1000 W / m 2 .
  • Current techniques if they are not associated with very expensive means, such as boosters, can not exceed a heat exchange coefficient of the order of 800 W / m 2 .
  • the cooling device of the device according to the invention is used at the beginning of the cooling zone, the rest of the zone remaining in a usual configuration.
  • the glass sheets scroll on a conveyor, they undergo cooling in two phases, the heat exchange coefficient being greater during the first phase.
  • Such an embodiment is particularly advantageous in the case of quenching of the glass; indeed, it makes it possible to have a high heat exchange coefficient at the beginning of quenching and then lower.
  • the inventors have been able to demonstrate that, for the quenching of a given glass sheet, a modulating quench consisting of a high heat exchange coefficient at the start, and then a low one, leads to results from a higher quenching point of view. to those obtained with a constant heat exchange coefficient, for identical overall energy costs.
  • the invention further provides for differentiating the heat exchange coefficient on the same surface at a given instant.
  • the invention advantageously provides that the surface of the boxes facing one side of the glass is pierced with holes whose dimensions are not identical for all.
  • the blowholes are of variable openings; these can be obtained by moving elements partially or totally obscuring a hole.
  • the rollers of the conveyor are positioned in a concavity curved profile directed upwards.
  • the device thus described according to the invention is advantageously intended for tempering curved glass sheets on installations of the type of those described in French patents FR-B-2 242 219 and FR-B-2 549 465.
  • the rollers usually have diameters between 20 and 30 mm and are spaced from each other by a pitch of between 40 and 130 mm. It could not be obvious to insert in these installations devices such as those of the invention which, in particular in the case of the small diameter of the holes, must be very close to the surfaces of the glass sheets; indeed, it was possible to fear a problem related to the evacuation of the blown air.
  • the tests have shown that despite the proximity of the blowing holes relative to the glass sheets, the air can be properly evacuated, which leads to heat exchange coefficients higher than those obtained with the usual quenching plants.
  • a device according to the invention in this type of installation will allow the bending and tempering of glass sheets having a thickness less than those usually hardened on this type. facilities. Indeed, current installations allow, most often, the quenching of glass sheets with a minimum thickness of 3.15 mm, which corresponds to a heat exchange coefficient of about 600 W / m 2 °. K.
  • the device according to the invention allows without any other modification the quenching of glass sheets with a thickness of 2.85 mm or 2.5 mm, which corresponds to a heat exchange coefficient of up to 1000 W / m 2 . K.
  • the invention also makes it possible to improve, particularly from a yield point of view, the results usually obtained for the quenching of glass sheets having holes passing through their thickness.
  • the presence of this type of holes is relatively common for glass sheets intended to equip motor vehicles and being slidably mounted to allow opening.
  • the device according to the invention also makes it possible to improve the optical quality of the glass sheets, the latter permitting a blowing distribution that is more homogeneous than the usual techniques.
  • This improved optical quality of the glass sheets is all the more interesting for the production of laminated glazing. Indeed, the combination of two sheets of glass or more generally two sheets of transparent materials does not add their defects from an optical point of view but increases them much more importantly.
  • DIN 32 305 defines "optical quality" for side windows for the automotive industry.
  • the invention thus makes it possible to produce laminated glazings comprising at least one glass sheet having surface stresses greater than 60 MPa, said laminated glazing satisfying the DIN 32 305 standard.
  • the invention notably authorizes the production of laminated glazing comprising at least one tempered glass sheet having surface stresses greater than 100 MPa and preferably of the order of 130 MPa, said laminated glazing satisfying the DIN 32 305 standard.
  • a laminated glazing of this type is particularly interesting for impact resistance functions.
  • These laminated glazings may include one or more sheets of glass regardless of their thickness. But the invention also makes it possible to produce such laminated glazings, with glass sheets having a thickness of less than 3 mm and preferably less than 2 mm, said laminated glazing may have the thickness of monolithic glazings currently used in the automobile.
  • FIGS 1, 2, 3 are only diagrams illustrating the invention that do not include all the details of the facilities and which are not shown in scale to simplify understanding.
  • FIG. 1 describes the path followed by the glass sheets in installations operating according to the technique, as known in particular from the patent FR-B-2,242 219.
  • the glass sheet 1 passes through a heating zone 2 in the first place where it is conveyed by a horizontal conveyor consisting of a series of driving rollers.
  • the reheating zone 2 At the exit of the reheating zone 2, its temperature then being greater than or equal to its bending temperature, it enters the first part of the bending zone 3 in which the rollers are mounted in a cylindrical profile longitudinally with a radius R
  • the rollers thus form a bed of conformation preferably concavity facing upwards and running (from left to right in Figure 1) on this bed; the glass sheets thus acquire a cylindrical curvature with a radius of curvature R obtained under the action of either gravity, or possibly higher elements, or their speed, or even the combination of two or more of these factors .
  • the first part of the bending zone 3 is followed by a second part which is a cooling zone where the rollers are arranged even according to the circular profile of radius R.
  • the cooling members are constituted by blow boxes 4 arranged on either side of the rollers thus acting on both sides of the glazing so that by passing between these boxes 4, and according to the chosen blowing pressure, depending on its thickness, the curved glass sheet is either hardened or simply hardened in a curved position.
  • the cooled glass sheets are finally discharged by a flat conveyor 5 which passes through a secondary cooling zone, a rocking device 6 possibly facilitating their exit from the cooling zone 4.
  • the glass sheet may optionally be given a secondary curvature of radius r, r being preferably greater than 5 meters, this limit referring to technical considerations relating to the shaped roll construction.
  • the rollers will preferably be equipped with counter-deflection devices as indicated in the patent application EP-A-413 619 and the conformation bed will also be completed by a second set of rollers acting on the upper face of the glass sheet and helping with the progression of the glass. These upper elements are also used when the conformation bed follows a true, non-cylindrical conic.
  • the boxes 4, illustrated in Figures 2 and 3 are associated with other boxes 7 inserted between the rollers 8 of the conveyor in the second part of the bending zone 3.
  • FIG. 2 illustrates in more detail the lower part of the bending zone 3 consisting essentially of the rollers 8 on which the glass sheets pass in the direction F.
  • the first three or four rollers 8 are sufficient to achieve the proper bending of the glass sheets.
  • the sheets of glass for example to soak them.
  • Boxes 7 according to the invention are thus inserted which have a surface 9 pierced with holes 10 for evacuating the blowing air in the direction of the scrolling glass sheets on the rollers 8.
  • the devices according to FIG. invention are only present at the beginning of the cooling zone according to a variant mentioned above.
  • the end of the cooling zone is equipped with conventional nozzles 11. It is possible according to this variant to improve the quenching of the glass sheets for a constant energy cost.
  • the device according to the invention equips the whole of the cooling zone.
  • FIG. 3 more precisely describes the insertion of the device according to the invention between two rollers 8.
  • the supply box 4 is the one usually used on which are connected the blowing nozzles.
  • This adaptation is achieved by means of a mounting flange 12 whose attachment can be simple and fast; this makes it possible to change the cooling device and to pass from traditional blowing nozzles to a device according to the invention rapidly.
  • the air is led from the caissons 4 by profiled tubes 13 of a sufficient section to prevent pressure losses to the caissons 7.
  • the caissons 7 are closed at the other end by plates 9 having the blowing holes 10 evacuating the air on the surface of the glass sheets 1 running on the rollers 8 of the conveyor.
  • two boxes 7 are inserted between two rollers 8. This embodiment should not be interpreted in a limiting manner, an embodiment with a single or more than two boxes 7 between two rollers 8 being achievable according to the spacing between the rollers 8.
  • the device had the following characteristics: the plates 9 closing the boxes 7 had a width of 15 mm and included two rows of holes 10 with a diameter of 2.5 mm, the distance separating two holes being 4 mm, so that the "collage" of two jets of puffed air do not appear.
  • the distance between two caissons 7 was at least 20 mm.
  • the distance separating the plates 9 from the glass sheets was 7 mm, with a tolerance of 4 mm.
  • the device presented and in particular the number of rows of holes must not be interpreted restrictively, plates 9 having one or more rows of holes 9 may be used.
  • the device thus described associated with a blowing pressure of 3000 mm of water column made it possible to dip, in accordance with the requirements of the European regulation 43 on safety glazing, curved glass sheets with a thickness of 2, 55 mm.
  • the minimum thickness of the tempered glass sheets according to the usual techniques is 3.15 mm.
  • the device according to the invention thus makes it possible to bend and quench thinner glass sheets by obtaining a higher heat exchange coefficient. If bending and then tempering glass sheet with a thickness of at least 3.15 mm is carried out with the device according to the invention, it is also possible to envisage an increase in the speed of movement of glass sheets, greater than 25 cm / s, the bending then quenching being performed more quickly. It is still possible, if the speed is not increased, to suppress the tilting system of the glass sheets at the quench outlet, since these being obtained more rapidly the distance traveled by the glass sheets allowing quenching can to be reduced. It is thus possible to receive the glass sheets without complex system to implement.

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  • Chemical & Material Sciences (AREA)
  • Physics & Mathematics (AREA)
  • Thermal Sciences (AREA)
  • Engineering & Computer Science (AREA)
  • Materials Engineering (AREA)
  • Organic Chemistry (AREA)
  • Mathematical Physics (AREA)
  • Re-Forming, After-Treatment, Cutting And Transporting Of Glass Products (AREA)

Claims (18)

  1. Vorrichtung zum Biegen und vorspannenden Abkühlen oder thermischen Aushärten von Glasscheiben (1), die durch einen Förderer aus Rollen (8) durchlaufen, der zwei Bahnen aus in einem kurvenförmigen Profil angeordneten Rollen (8) umfasst, zwischen welchen die Glasscheiben (1) befördert werden, um gebogen und anschließend abgekühlt zu werden, wobei die Rollen (8) auf die zwei Seiten der Glasscheiben einwirken und die Vorrichtung zum Abkühlen Blaskästen, welche die zwei Seiten der Glasscheiben abkühlen, umfasst, dadurch gekennzeichnet, dass zwischen den Rollen (8) Kästen (7) eingefügt sind, die eine Fläche (9) mit einem Abstand von kleiner als 30 mm und vorzugsweise kleiner als 10 mm in Bezug auf die Glasscheibe (1) aufweisen, die mit mehreren Löchern (10) durchbohrt ist, um Luft auf die Glasscheibe (1) zu blasen.
  2. Vorrichtung nach dem vorhergehenden Anspruch, dadurch gekennzeichnet, dass zwischen den Rollen (8) Kästen (7) eingefügt sind, die eine Fläche (9) mit einem Abstand von kleiner als 30 mm und vorzugsweise kleiner als 10 mm in Bezug auf die Glasscheibe (1) aufweisen, die mit mehreren Löchern (10) durchbohrt ist, um Luft auf die Glasscheibe zu blasen, über und unter dem Weg der Glasscheiben angeordnet sind.
  3. Vorrichtung nach Anspruch 1, dadurch gekennzeichnet, dass zwischen den Rollen (8) Kästen (7) eingefügt sind, die eine Fläche (9) mit einem Abstand von kleiner als 30 mm und vorzugsweise kleiner als 10 mm in Bezug auf die Glasscheibe (1) aufweisen, die mit mehreren Löchern (10) durchbohrt ist, um Luft auf die Glasscheibe zu blasen, mit welchen die Vorrichtung nur auf einer Seite ausgerüstet ist.
  4. Vorrichtung nach einem der vorhergehenden Ansprüche, dadurch gekennzeichnet, dass die Rollen (8) in einem gekrümmten Profil angeordnet sind, dessen Konkavität nach oben zeigt.
  5. Vorrichtung nach dem vorhergehenden Anspruch, dadurch gekennzeichnet, dass die Kästen (7) eine Fläche (9) mit einem Abstand von kleiner als 30 mm und vorzugsweise kleiner als 10 mm in Bezug auf die Glasscheibe (1) aufweisen, die mit mehreren Löchern (10) durchbohrt ist, um Luft auf die Glasscheibe (1) zu blasen, welche zwischen den oberen Rollen (8) eingefügt sind.
  6. Vorrichtung nach einem der vorhergehenden Ansprüche, dadurch gekennzeichnet, dass die Rollen (8) rotationssymmetrische Elemente wie Zylinder, Einrichtungen vom Typ einer doppelkegeligen Rolle, konische Systeme und gegengebogene Systeme sind.
  7. Vorrichtung nach einem der vorhergehenden Ansprüche, dadurch gekennzeichnet, dass der Durchmesser der Löcher (10) 2 bis 8 mm beträgt und diese mit einem Abstand von 3 bis 6 mm verteilt sind.
  8. Vorrichtung nach einem der vorhergehenden Ansprüche, dadurch gekennzeichnet, dass der Durchmesser der Rollen (8) 20 bis 30 mm beträgt.
  9. Vorrichtung nach einem der vorhergehenden Ansprüche, dadurch gekennzeichnet, dass die Rollen (8) einen Abstand von 40 bis 130 mm voneinander haben.
  10. Verwendung der Vorrichtung nach einem der vorhergehenden Ansprüche zum Erzeugen der Biegung und Abkühlen der Glasscheiben (1).
  11. Verwendung nach dem vorhergehenden Anspruch, dadurch gekennzeichnet, dass die Vorrichtung mit einem Blasdruck von kleiner als 3000 mm Wassersäule versorgt wird und einen Wärmedurchgangskoeffizienten mit dem Glas von mindestens 800 W/m2·K und vorteilhafterweise mindestens 1000 W/m2K sicherstellt.
  12. Verwendung nach einem der vorhergehenden Verwendungsansprüche, dadurch gekennzeichnet, dass die Vorrichtung zum Biegen und am Anfang der Abkühlungszone verwendet wird.
  13. Verwendung nach einem der vorhergehenden Verwendungsansprüche, dadurch gekennzeichnet, dass die Vorrichtung in Bezug auf die zwei Seiten der Glasscheiben (1) eine differenzierte Abkühlung bewirkt.
  14. Verwendung nach einem der vorhergehenden Verwendungsansprüche, dadurch gekennzeichnet, dass die Vorrichtung gegenüber ein und derselben Seite der Glasscheiben (1) eine differenzierte Abkühlung bewirkt.
  15. Verwendung nach einem der vorhergehenden Verwendungsansprüche zur Herstellung von gebogenen und vorgespannten Glasscheiben (1), die eine Oberflächenspannung von über 100 MPa besitzen.
  16. Verwendung nach einem der vorhergehenden Verwendungsansprüche, dadurch gekennzeichnet, dass die Dicke der Glasscheiben (1) weniger als 3 mm und vorzugsweise weniger als 2,8 mm beträgt.
  17. Verbundglasscheibe, die aus mindestens einer gebogenen Glasscheibe (1), die eine Oberflächenspannung von über 60 MPa besitzt, besteht und die Norm DIN 32 305 erfüllt.
  18. Verbundglasscheibe, die aus mindestens einer gebogenen Glasscheibe (1), die eine Oberflächenspannung von über 100 MPa besitzt, besteht und die Norm DIN 32 305 erfüllt.
EP98943954A 1997-09-11 1998-09-10 Vorrichtung zur härtung gebogenen glasscheiben Expired - Lifetime EP0939744B1 (de)

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
FR9711287A FR2768142B1 (fr) 1997-09-11 1997-09-11 Dispositif de refroidissement de feuilles de verre bombees
FR9711287 1997-09-11
PCT/FR1998/001933 WO1999012855A1 (fr) 1997-09-11 1998-09-10 Dispositif de refroidissement de feuilles de verre bombees

Publications (2)

Publication Number Publication Date
EP0939744A1 EP0939744A1 (de) 1999-09-08
EP0939744B1 true EP0939744B1 (de) 2006-03-15

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EP98943954A Expired - Lifetime EP0939744B1 (de) 1997-09-11 1998-09-10 Vorrichtung zur härtung gebogenen glasscheiben

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Country Link
US (1) US6598427B1 (de)
EP (1) EP0939744B1 (de)
JP (1) JP4602485B2 (de)
KR (1) KR100616780B1 (de)
BR (1) BR9806173A (de)
DE (1) DE69833871T2 (de)
ES (1) ES2259209T3 (de)
FR (1) FR2768142B1 (de)
PL (1) PL187879B1 (de)
WO (1) WO1999012855A1 (de)

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US10611664B2 (en) 2014-07-31 2020-04-07 Corning Incorporated Thermally strengthened architectural glass and related systems and methods
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US10077204B2 (en) 2014-07-31 2018-09-18 Corning Incorporated Thin safety glass having improved mechanical characteristics
CN108698922B (zh) 2016-01-12 2020-02-28 康宁股份有限公司 薄的热强化和化学强化的玻璃基制品
US11795102B2 (en) 2016-01-26 2023-10-24 Corning Incorporated Non-contact coated glass and related coating system and method
JP6708968B2 (ja) * 2016-11-11 2020-06-10 日本電気硝子株式会社 板ガラス製造装置及び板ガラス製造方法
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JP2001507329A (ja) 2001-06-05
KR20000068820A (ko) 2000-11-25
JP4602485B2 (ja) 2010-12-22
DE69833871T2 (de) 2006-10-26
KR100616780B1 (ko) 2006-08-29
ES2259209T3 (es) 2006-09-16
PL187879B1 (pl) 2004-10-29
PL333129A1 (en) 1999-11-22
FR2768142B1 (fr) 1999-11-05
FR2768142A1 (fr) 1999-03-12
DE69833871D1 (de) 2006-05-11
WO1999012855A1 (fr) 1999-03-18
BR9806173A (pt) 1999-10-19
EP0939744A1 (de) 1999-09-08
US6598427B1 (en) 2003-07-29

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